If wanted to extract a unqie list of all ORCIDs from a collection. For our example we assume that you have already created a collection called *publishers.ds”.
dataset publishers.ds extract true .authors[:].orcid
If you wanted to extract a list of ORCIDs from publications in 2016.
dataset publishers.ds extract '(eq 2016 (year .pubDate))' .authors[:].orcid